# Questions tagged [orbit]

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### 2D orbit an orbiting body without ellipse

I have a monster (boss) that spawns a minion (m1) which orbits the boss. m1 can spawn its own minion (m2) which orbits m1. This creates a situation where m2 is orbiting m1 and m1 is orbiting the boss. ...
1 vote
630 views

### Orbit and control distance from object in 3D

I'm stumped on a key part of my game project, built in Godot 3.5.2. I'm trying to have my player character be able to rotate around an object using A and D, as well as get closer and farther from it ...
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### How to predict future position of body in solar system?

I have a solar system where each body interacts with each other by force F = Gm1m2/R^2 Is it possible to predict future position of some random body after t seconds since bodies velocity and position ...
• 251
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### Unity3D: Firing a projectile from orbit

I am dropping bombs from a spaceship orbiting a planet. My camera is affixed to the ship. I fire bombs by instantiating a bomb at the position of the camera, which is at all times facing toward the ...
• 135
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### Simple Orbital transfer and intercept equation

I'm working on a game which has a game board made up of objects orbiting the center of the board. You can think of it as our solar system, but greatly simplified in terms of physics. All objects ...
63 views

### Logic behind a cubic reflection

I'm creating a cube in WebGL made of mirros that have to reflect the object inside of it. At the moment I'm stuck because I don't understand the correct logic to implement to achieve the result. I ...
• 101
2k views

### 360 Orbital Camera Controller

I have a stationary cube in my scene that I'm orbiting a camera around. I have my MainCamera nested under a GameObject that I'm calling 'OrbitalCamera'. I setup the script so that a click (or tap) ...
• 111
206 views

### Smoothly moving an orbiting object back into orbit

I have an object that orbits the player's sprite with code that looks like this: ...
1 vote
324 views

### Direction between objects (shortest distance around sphere)

I have two objects rotating around a sphere. One is controlled by the user (object A), another is simulating a user but controlled by the computer (object B). At random intervals of time I'd like ...
• 586
1 vote
2k views

### How to Find Collision Reflection Vector on a Sphere

I have a game I'm building in Unity with some objects orbiting a sphere via rotating around a pivot point (0,0,0) at a radius of 10 units on the z-axis. The orbiting objects all have the same velocity....
• 586
301 views

### How to achieve an orbit-adjustable rotation?

Here's a script: ...
• 2,552
1 vote
443 views

### How do I make planet move slower the further away they are? [duplicate]

I got this code from somewhere else, I want to implement Kepler's third law to make the simulation look more realistic, the simulation is a 2D satellite orbiting around a planet, the satellite(Planet) ...
236 views

### How can I make a spaceship auto level while in orbit?

I’m trying to make a ship auto level so that the belly of the ship stays facing the planet. I found the answer in 2.5D*, but I can’t get it to work in 3D. ...
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1 vote
139 views

### Detecting collisions between orbiting objects in 2D

I am currently in the process of creating a 2D space debris simulation. I have the orbital physics implemented, but I am currently struggling to find a suitable way of detecting collisions. There are ...
121 views

### XNA - 2D camera orbit around sprite

OK, I have a 2d sprite in a scene and I would like to know the theory behind the camera orbiting around it with an analog stick. I know the basic code to get the input from the gamepad, but I'm having ...
833 views

### Unity Controller to Make Reticle Orbit based on the right stick input

d platformer arena like game. Right now I have it so a reticle moves around the player based on a controller's right stick's horizontal movement using the rotate around function and while it works ...
713 views

### How to rotate actors around the actor like a satellite around the earth?

I'm not a pro in LibGDX and physics but I know basics, vectors, actor's actions and so. I'm trying to achieve a movement like on the gif below: For now, let's say that I have a stage and a central ...
• 2,552
1 vote
82 views

### My orbit code produces the wrong results

I have a GameObject called "Sun" in the sky. A game object called "GameManager" keeps track of time in the game, it is responsible for updating the hours and days. For my sun I do something like this ...
• 27
3k views

### How to avoid gimbal lock in Unreal Engine (c++)?

I created an orbit camera (sometimes called turntable camera; similar to the one with the "use UE3 orbit controls" setting in a static mesh view). I attached the camera to a ...
• 291
1 vote
58 views

### Manual orbit motion jerks at a certain point

So I've been trying to make a simple sphere-orbiting-another-sphere test. The smaller sphere is supposed to circle the bigger one based on the mouse location. Here is my code: ...
228 views

### Computing a full revolution for an arbitrary orbit?

I'm making a game in which the goal is to get as many planets as possible to orbit around a star. The user launches planets at any distance away from the sun (as long as it's on-screen), and in any ...
• 1,077
1 vote
1k views

### Object orbiting a 3d sphere

I'm developing in libgdx java/android but not using any high-level environment like Unity. I have a sphere at [0,0,0], with a PerspectiveCamera looking at it. Through the main game loop I have ...
• 113
2k views

### Orbital mechanics: orbit as a function of time. Universal variable formulation?

I am trying to model a two dimensional orbit for a two body Kepler problem but have gotten stuck when introducing the time variable. For a satellite with known semi major axis (a), eccentricity (e), ...
• 73
54 views

### 2D orbital mechanics [duplicate]

I'm working on a 2D game which involves firing projectiles around a solar system and having the path of the projectile change based on the gravitational pull of solar bodies. I've been trying to find ...
• 604
729 views

### GameMaker: Studio - Slow down calculations

I currently have an orbital simulator, with a brilliant answer in another Game Development question here, and would like to know how to slow down the calculations of Game Maker, to be able to do more ...
3k views

### How does orbital math work?

I'm writing a 2d space game, and I want the players to be able to 'orbit' objects and other players (if they're fast enough, of course), but I'm having trouble coming up with the right way to think ...
• 103
871 views

### Orbits: Combine the Pros of RK4, Symplectic Euler, and Verlet Velocity Integrator

Recently, I've implemented and compared a number of basic integrators for my physics engine. The 3 that gave me the best results are RK4, Symplectic Euler, and Verlet Velocity, but I think I need ...
• 423
1k views

### Non linear scaling to show a sol system

In a sol system 2d simulation I have some problems in showing the entire system (ie: eaven planets far away than saturn ) letting distinguibles the nearest planet orbits. Actualy a use a simple ...
• 3,460
1 vote
426 views

### Calculating orbital elements from Cartesian Vectors

I'm having serious troubles with getting my calculations to work. I'm calculating the orbital elements from a position vector, and a velocity vector. (I also know the distance and mass of the bodies ...
626 views

### Calculate Orbit Path/Ellipse given mass, velocity, and distance (2body)

Calculate and draw the path of an orbit in a 2 body problem given the mass, current velocity, and distance of both bodies? We're working in Unity and will be using the default rigidbody.mass to start ...
• 31
2k views

### What is wrong with my 2D orbit calculation?

I am working on a 2D game, and I am working on adding some space physics, so I need to find a way to create a circular orbit. I want to make my game object move on a circular way around a planet. I'm ...
• 121
1k views

### How do I keep my orbiting camera upright?

I am working on code that rotates the camera around a point on the in-game map when dragging the mouse. I understand how to lock it so it stays above the map surface. However, if I keep rotating the ...
6k views

### How can I implement simple object orbits in Game Maker?

I've seen a lot of tutorials for things like "fixed circular orbit" and "elliptical orbits" which end up never been what I actually want. I have two objects: ...
1 vote
693 views

### How can make an object orbit a sphere in a random direction?

How can I move an object on a random orbital path around a sphere? I've created some objects at an initial position that is essentially a random point on the sphere offset by some distance (say, 10.0)...
• 346
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### Homeworld style orbital camera concept [closed]

So I spent some time thinking of how I'm going to make a camera similar to what's used in Homeworld (a 3D space RTS, in which your camera can be rotated around your units to look at them from any ...
• 179
1 vote
532 views

### How can I compute the orbit of one body around another?

I'm attempting to have a planet (with a known mass and radius) orbit it's sun (also with a known mass and radius). It doesn't have to be 100% realistic, but it should be possible that the sun have ...
1k views

### XNA Zoom in/out on model instead of scaling the model

I'm trying to implement zoom in/out functionality into my game. I can change the cameraDistance value with the Z and X keys. Instead of zooming, it looks like the model is scaled smaller or larger (...
36k views

### Unity3D Orbit around orbiting object (transform.RotateAround)

The best way to explain this is I'm attempting to make a small model solar system (not to scale or anything complicated, just simple rotation as a learning exercise). There's a sun, a planet, and that ...
• 185
167 views

### Computing orbit direction depending on angle of approach

I'm trying to develop a simple 2D space game with no friction using corona-sdk. In the game, I have several planets which all applies forces to the player according to Newton's law of universal ...
1k views

### Avoiding orbiting in pursuit steering behavior

I have a missile that does pursuit behavior to track (and try and impact) its (stationary) target. It works fine as long as you are not strafing when you launch the missile. If you are strafing, the ...
• 17.1k
2k views

### adapting a Unity gravitational script to allow moons

I'm using this script: http://wiki.unity3d.com/index.php/Simple_planetary_orbits to get a solar system going in Unity, but it doesn't seem to support creating bodies that orbit other moving bodies (...
• 61
1k views

### how to calculate intersection time and place of multiple moving arcs

I have rocks orbiting moons, moons orbiting planets, planets orbiting suns, and suns orbiting black holes, and the current system could have many many layers of orbitage. the position of any object ...
• 149
2k views

### Elliptical orbit modeling

I'm playing with orbits in a simple 2-d game where a ship flies around in space and is attracted to massive things. The ship's velocity is stored in a vector and acceleration is applied to it every ...
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